How to clean the carburetor on a STIHL 180 chain saw

Adjusting the STIHL 180 carburetor

STIHL 180 chain saw carburetor, no disassembly, only the number of revolutions at idle speed can be adjusted. Increase or decrease the fuel supply in different modes with special screws can not. The manufacturer restricts access to the adjustments and does not install these screws. How to adjust the carburetor to the correct idle speed is described in detail in the manufacturer’s instructions.

If certain malfunctions occur, and if you have experience, you can increase or decrease the fuel supply by increasing the needle valve opening gap.

How To Clean The Carburetor On A Stihl Chainsaw (MS180C) with Taryl

To increase the flow, the rocker arm of the needle valve in the distribution chamber should be bent upwards, and to reduce, downwards. This adjusts the stroke of the needle and consequently the flow capacity of the valve.

Do not adjust the settings by yourself, because. к. this must be done very precisely and in the event of an error it is next to impossible to return the rocker to its original position.

Troubleshooting and repairing your STIHL 180 chain saw

The popularity of this unit is also due to the reasonable price. But when using this tool some problems can arise from time to time. After the warranty period has elapsed, you can repair the machine yourself.

Reassembling a STIHL chainsaw 180

Reassemble the STIHL ms 180 saw, easy enough, the main thing is to adhere to the following algorithm:

  • Install the piston on the connecting rod, the arrow on the piston must face the direction of the STIHL 180 chain saw, and on the left hand side of the piston is the side of the crankshaft that is designed to install the flywheel;
  • Insert the piston carefully back into the cylinder and make sure that the piston mount is on the side where the flywheel sits on the crankshaft;
  • Install the bearings, oil seals and circlip on the shaft and lower the assembled assembly into the cylinder seats;
  • Further to degrease the place of installation of a crankcase and a crankcase, then to grease a sealant and having established in a place to screw up 4 screws of fastening;

To reassemble the STIHL 180 after you have assembled the engine, follow the reverse order of disassembly. It is important to treat the process carefully and do not forget to install the rods on the carburetor, and connect the ignition wire.

Below you can watch the STIHL 180 disassembly video, it is made for inexperienced users, it shows the whole process in detail.

If you have some experience disassembling and reassembling a STIHL 180 chain saw is quite simple. remember to clean it well and take your time before you start. In order to prevent the loss of small parts, you must use a container in which to arrange the parts in the process.

Peculiarities of washing in the ultrasonic bath

If you are wondering how to wash a chainsaw carburetor without disassembly, then there is only one answer. no way. An ultrasonic bath in this case is also useless, because in the process of cleaning it is necessary to ensure free drainage of dirt from the channels. If the carburetor is not dismantled, then these impurities will simply have nowhere to go, and the result of such cleaning will simply be useless.

Some petrol tool owners look for different flushing liquids and additives in the fuel mixture, hoping for their effectiveness. All these preparations and concentrates are simply useless, and if you really want to make a highly effective cleaning of the carburetor, then you should use a special ultrasonic bath. Even if your neighbor has convinced you of the effectiveness of such concentrates, then imagine the picture when all the contaminants enter the cylinder. Naturally, it will lead to nothing good, and as a consequence. You will have to disassemble and repair or replace the internal combustion engine.

The ultrasonic channel cleaning is the most effective, but even taking this factor into account, there is no talk about a full recovery. It all depends on the extent of the blockage.

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In addition, it is necessary to know thoroughly how to perform this procedure correctly. In particular, it is necessary to calculate the time of washing, as well as the temperature. The principle of washing the carburetor of a chainsaw in an ultrasonic bath is as follows:

  • Remove the carburetor from the chain saw and disassemble it
  • It is necessary to disassemble the carburetor in order to ensure deeper penetration of the cleaning fluid inside the channels
  • The carburetor is placed in the container, except for small parts and rubber membranes
  • It is necessary to pour into a container a special liquid Ultra Red, which is mixed with water
  • Turn the machine on for an appropriate length of time. 10-15 minutes

After the procedure is complete, you will need to make a blowout of the channels with compressed air, but carefully. After that, assess the quality of washing, and only after that perform the assembly of the mechanism.

STIHL 180 chain saw oil pump repair

The STIHL MS 180 chain saw is an indispensable tool for wood harvesting and other construction site work. It is one of the most recognized garden devices, which is armed with functionality.

The weight of the tool is approximately 4 kg. Power reaches 1.5 kW and the bar length of 35 cm.

Note that the semi-professional device for this saw model inherited electric ignition and a fairly sharp tensioning chain. In addition, the STIHL MS 180 has four tanks designed for gasoline, as well as oil consistency.

One of the main features is reduced vibration.

Such a result is achieved thanks to the 4 shock absorbers. It’s no secret that the highest shock absorption has a harmful effect on human health and Europe has long fought it.

It should be emphasized that without assistance from others to disassemble this saw without special instruction is not better in this matter is better to entrust the device masters.

The owners of this model need to be prepared for the fact that be confronted with such a nasty moment, as a leak of oil for chain lubrication. Oil can leak in its time working with the inventory and when just lying around without a deed.

What is the cause of this fault?? There is a possibility that oil leaks because of violations of tightness in the area where the hose from the oil tank and the pump is connected.

To solve the STIHL MS 180 oil problem it is necessary to disassemble the machine.

  • Check the hose, if it is damaged, replace it with another. Either try to degrease and wash the hose and put on a sealant, it should work.
  • Check if the oil filter is broken and clean it (if you filled it with used oil)
  • It is also possible that the reason is a clogged trigger and at the same time there is a vacuum in the tank with fuel, and this affects the fuel supply. Failure you like more in carburetor adjustment and happen clogged channels, and otherwise the air filter, you must scrupulously clean the filter and carburetor channels.

Malfunctions and repairs

The carburetor on a STIHL 180 chain saw requires both initial and periodic adjustments. You can learn about its necessity by the following signs:

  • Engine trouble, such as the engine not starting or stopping right away after starting. The most common cause is the use of a low-quality fuel mixture.
  • Fuel consumption and increased exhaust emission. Exhaust becomes more frequent due to incomplete combustion. This problem is most commonly caused by an excessive level of fuel.

Other malfunctions can also occur, such as clogging due to a damaged air filter or scale buildup. Causes may be due to gasoline remaining in the fuel tank with prolonged idle time. This is due to the fact that the fuel is exhausted, which spoils the device.

clean, carburetor, stihl, chain

No matter what the cause, you will need to have the carburettor repaired, and more often than not, it simply needs to be adjusted. The way to perform this procedure depends on the chainsaw model, but general principles can be followed.

How to remove the carburetor from a chain saw

It must be removed from the STIHL chain saw before adjustment. To do this

  • Turn the catch to the left to remove the cover.
  • Remove the filter, for which unscrew the two nuts that hold it. For easy work it is recommended to use special screwdrivers with suitable tips.
  • Remove all the rods, including the carburetor lever.
  • Remove the carburetor and then disconnect the fuel hose.
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It is recommended to memorize the location of the parts so that you can then put the carburetor in place and no unnecessary fasteners or warps and slots are left.

How to clean

In the event that the chainsaw stalls at idle, it is necessary to disassemble the part and clean it. First of all, this applies to the cleaning of the additional filter. This part is a grid. To get to it, you need:

  • Remove the largest cover.
  • Remove the diaphragm, which is located under the lid.
  • Clean the sieve that is in the recess. Do it very carefully, because the mesh can fall out. Use a copper wire for cleaning. In addition you need to flush and purge all the passages. The last procedure is necessary if there is no petrol in the carburetor.

How to tune

To improve performance and fuel economy, adjust the carburetor on the STIHL 180 chain saw.

  • Clean the fuel system and tank of any gasoline-oil mixture. Blow out the air duct and filters.
  • Set up the chainsaw carburetor with the H, L and S bolts. The H bolt controls the nozzle and gives maximum RPM. The L bolt has the same function but provides the lowest rpm. The S screw controls the idle speed. Perform this procedure with the engine off.
  • Adjust the carburetor on the chainsaw by tasking the appropriate angles of rotation of the first two bolts. Set the datum values as follows. Turn the first two bolts slowly in clockwise direction, after the stop turn back two revolutions.
  • Start the engine and adjust the ignition on the STIHL chain saw and its carburettor. To do this, find the highest idle speed by turning the bolt L in different directions. Once this maximum is found, the bolt should be returned a quarter turn. If the chain moves, stop the engine.
  • Carry out a technical check. Check the maximum engine rpm, acceleration and idle speed and whether these values are in agreement with the basic settings in the Instruction Manual. The quality of the mixture to be checked must be the highest.

Oil supply repair

The oil system in a STIHL 180 chain saw is often defective. You can tell when the chain is dry or when there is a leak.

Start with a thorough inspection of the oil supply hose to solve the problem. Connection of the hose with connectors can also be inspected.

While you are inspecting and repairing the oil system you must also clean the filter. Often its contamination leads to poor oil flow.

If there is an oil leak, it means that there is a leak in the system. This applies first of all to the hose and oil ducts. Most often such faults occur as a result of mechanical damage to the system elements.

The process of removing and cleaning the air filter

If the inspection determined that the integrity of the hose is compromised, it is replaced. If the damage is minor, it can be hidden by using sealant. This radical way will reduce the cost of repair.

Troubleshooting and Repair

The carburetor on the STIHL 180 chain saw requires both initial and periodic adjustments. You can tell when it is needed by the following signs:

  • Engine trouble, such as the engine not starting or stopping right away after starting. The most common cause is the use of a low-quality fuel mixture.
  • Fuel consumption and increased exhaust emissions. Exhaust becomes larger due to incomplete combustion of fuel. Most often, this problem can occur due to an oversaturation of fuel.

Other malfunctions can also occur, such as clogging due to a damaged air filter or scale formation. Reasons may be that gasoline is left in the fuel tank when the machine is not used for a long time. This is due to the fact that the fuel is exhausted, thus ruining the device.

Regardless of the cause, carburetor repair will be required, which most often boils down to adjustment. The way to do it depends on the chainsaw model, but a general rule of thumb could be.

How to remove the carburetor from a chainsaw

Before making any adjustments you must remove the carburetor from the STIHL chain saw. To do this:

clean, carburetor, stihl, chain
  • Turn the catch to the left to remove the cover.
  • Remove the filter by unscrewing the two nuts that hold it in place. For ease of work, it is recommended to use special screwdrivers with suitable tips.
  • Remove all the rods, including the carburetor lever.
  • Remove the carburetor and then disconnect the fuel hose.

It is recommended to remember the location of the parts, so that you can then put the carburetor in place and no unnecessary fasteners or distortions and gaps are not left.

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How to Clean

In the event that the chainsaw stalls at idle, it is necessary to disassemble the part and clean it. First of all it concerns the cleaning of the additional filter. This part is a strainer. To get to it, you need:

  • Remove the largest cover.
  • Remove the diaphragm, which is located under the cover.
  • Clean the sieve that is in the recess. Be very careful when doing this because the wire mesh can fall out. Use copper wire for cleaning. Additionally it is necessary to flush and purge all passages. The last procedure is necessary if there is no petrol in the carburettor.

How to adjust

Adjusting the carburetor on the STIHL 180 chain saw is designed to improve performance and save fuel.

  • Clean the fuel system, including the tank, of residual gasoline and oil mixture. Blow out the air duct and filters.
  • The carburetor of a chainsaw is adjusted using the H, L and S bolts. Bolt H controls the nipple, provides maximum rpm. Bolt L performs the same function but provides minimum rpm. Screw S is responsible for accuracy of idle speed. Perform this procedure with the engine off.
  • Adjust the carburetor on the chainsaw by setting the appropriate angles of rotation of the first two bolts. To set the basic values, proceed as follows. The first two bolts to turn slowly in a clockwise direction, after the stop go back two revolutions.
  • Start the engine and adjust the ignition on the STIHL chain saw and its carburetor. To do this, you need to find the highest idle speed by turning the bolt L in different directions. Once this maximum has been found, the bolt must be returned a quarter turn. If the chain starts to move, stop the engine.
  • Carry out a technical check. Specifically, determine the maximum rpm and check the engine acceleration and idling stability, as well as the correspondence of these parameters to the basic values given in the manual. The quality of the mixture to be checked should be the highest.

How to clean the carburetor of a chainsaw with your own hands

A number of signs may indicate that a carburetor needs cleaning. For example:

  • The engine starts with difficulty.
  • Internal combustion engine cannot gain maximum rpm.
  • At idle the chainsaw stalls.
  • Increasing the speed causes the engine to stall.
  • There is black smoke coming out of the muffler during operation.
  • Increases the fuel consumption.
  • The engine stops when warming up.

If one or more signs of malfunction are found, the chainsaw must be cleaned. To do this, experts recommend following this sequence of actions:

  • Get a cleaner. Do not exclude the possibility of using the WD-40 solvent.
  • Remove the carburetor.
  • Disassemble the device, starting from the place where the fuel is pumped. the diaphragm pump. It is enough to unscrew the fixing bolt.
  • Remove the top cover. If the cover is removed, the diaphragm pump can be accessed.
  • Diaphragm should be clean, flexible and soft. If it is stiff and clogged, it must be replaced.
  • Now it is time to evaluate the condition of the fuel filter screen. If clogs are found on its surface, they must be removed. To do this, the mesh is removed and cleaned with a soft brush.
  • After that you need to turn the carburetor to yourself with the back side and unscrew the fastening screws that fix the plate.
  • Under the plate, there is a second diaphragm that controls the needle, closing and opening the hole through which the fuel enters.
  • It must also be clean and elastic. Otherwise the second membrane will also have to be replaced.
  • the small foot is connected to the needle, if it has a bent appearance, it can be carefully bent towards itself by 0.5-1.0 mm. If this is not done, the needle will not be able to open fully, reducing the power indicator of the chainsaw motor.
  • Now you can clean the inside of the device and blow out the ducts with a cleaner. There is a long spray tube on its spout, which makes it easy to work with.

After cleaning is complete, the equipment is assembled in the reverse order of disassembly.

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